Coagulation electrodes are described which are intended for the thermal coagulation of biological tissue by means of high-frequency electrical alternating current. The area adjoining the contact surface of the coagulation electrode is designed as a heat sink with such a great heat capacity value and ...

The invention relates to a device for monitoring the application of neutral electrodes with at least two separate contact surfaces (2, 3) on the patient during high-frequency surgery. Warning signals and/or automatic switching-off of the high-frequency generator (17) occur when and only when the hig ...

The exit opening (10) for the plasma is a slot, from which a flat or fan-shaped jet of plasma (11) exits with a laminar flow at its edges (12,12'), so that the plasma reaches the tissue with substantially no mixing with the surrounding air. The instrument (31) includes a gas source (1) for deliverin ...

The invention describes a H.F. surgical instrument for cutting and/or coagulating biological tissues, which has a metallic sleeve 12 serving as a neutral electrode and in which a metal needle 11, which serves as the cutting electrode and which is insulated against the sleeve, is arranged so as to be ...

An electrosurgical unit for achieving coagulation of tissue during endoscopic surgery, comprising: an endoscope having a plurality of working channels, each channel having a predetermined diameter, a flexible, hollow tube disposed in one of the working channels of the endoscope, having a diameter wh ...

The invention describes a high frequency surgical instrument for cutting and/or coagulating biological tissues, comprising a metallic sleeve 12 in which a metallic needle 11 serving as the cutting electrode is arranged so that it can be pushed out in the axial direction and is electrically insulated ...

The common mount surgery tool has a holder (9) to position the working end to the operation site and with a selection of tool heads which can be extended into selected working positions. The tool mount can be rotated about its middle axis to position each tool as required. The ultrasonic tool is ele ...

Radio-frequency surgical device for cutting and/or coagulating biological tissues by means of radio-frequency electric current, having an automatic regulation circuit for regulating the output voltage (Ua), a voltage transformer (6) combined with electrical isolation in the form of an isolating tran ...

An electrosurgical unit for achieving coagulation of tissue during endoscopic surgery, comprising: an endoscope having a plurality of working channels, each channel having a predetermined diameter, a flexible, hollow tube disposed in one of the working channels of the endoscope, having a diameter wh ...

A description is given of a supporting arm for an electromedicinal heat therapy appliance, which arm exhibits at least along a part of its length a flexible helix structure which permits a fixing of the supporting arm with an applicator disposed thereon in any set bending position by mechanical stat ...